In an interview with Varg posted on the Burzum official website, Varg has admitted that he will be working on a tabletop RPG, stating,

"I am not trying to revolutionize RPG gaming with this game or anything like that. I just wanted to add in a game some things I have always missed in other games and remove some things I didn't like, and then create a setting I would want to play in myself."
He will also be infusing much of his knowledge of the sorcery and religion of ancient Scandinavia into the IP, all while balancing this with his new inquiries into the superior Neanderthalic peoples, of which he is reporting Europeans are directly descended from.

I watched that documentary "Until The Light Takes Us" and the interviews with him in that hotel room that passes for a maximum security prison cell over there were hilarious. I was expecting him to be some intimidating figure but the guy is the biggest dork I've seen in my life.